Probability and Statistics in Engineering and Science, STAT/MATH 390 Click here to send ME an anonymous email. Note: because of the anonymity, I will NOT be able to reply to these emails. If you want a reply, send your emails to
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Get R_intro , R_primer ,
R_ref_card . Tentative and evolving syllabus;
LATEST REVISION: 3/31, 4/2 (Anna's office hour) ... Quiz (and Solutions):
quiz 1 , quiz 2 ,
quiz 3 , quiz 4 ,
quiz 5 , ...
-------------------------------------------------------------------------------------------------- Consult the homework Rules , first. HW1-4 are due 4/8 in quiz session.
Solutions
HW5-8 are due 4/15 in quiz session.
Solutions + hw4/10
+ hw4/11
HW9-11 are due 4/22 in quiz session.
Solutions
HW12-13 are due 4/29 in quiz session.
Solutions ,
hw4/21 .
HW14-16 are due 5/6 in quiz session.
Solutions ,
hw4/28_1 ,
hw4/28_2 ,
hw4/28_3 ,
hw5/1 ,
hw5/2.
HW17-20 are due 5/13 in quiz session.
Solutions +
5.62 +
hw5/5 +
hw5/9
HW21-22 are due 5/20 in quiz session.
To download a free version of R for your own machine, go
here.
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Material for/from lab: 4/1 , 4/8 ,
4/15 , 4/22 ,
4/29 , 5/6 ,
5/13 , ...
Data: hist_dat.txt ,
1_4b_dat.txt ,
1_9_dat.txt ,
hail_dat.txt ,
9_1_dat.txt ,
11_39_dat.txt ,
attend_dat.txt .
Lecture 1 (Ch. 1) 3/31.
Lecture 2 (Ch. 1) 4/2.
Lecture 3 (Ch. 1) 4/3.
Lecture 4 (Ch. 1) 4/4.
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Lecture 5 (Ch. 2) 4/7. TYPO CORRECTED on top of page 3
Lecture 6 (Ch. 2) 4/9.
Lecture 7 (Ch. 2-3) 4/10.
Lecture 8 (Ch. 3) 4/11.
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Lecture 9 (Ch. 3) 4/14.
Lecture 10 (Ch. 3) 4/17.
Lecture 11 (Ch. 3) 4/18.
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Lecture 12 (Ch. 3) 4/21.
Lecture 13 (Review) 4/23.
Lecture 14 (Ch. 4) 4/25.
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Lecture 15 (Ch. 4) 4/28.
Lecture 16 (Test1 soln) + Continuity Correction 4/29.
Histogram of total grade +
scatterplot (and histogram) of individual grades.
FYI: A=(3.5-4.0), B=(2.5-3.4), C=(1.5,2.4), D=(0.7-1.4).
Lecture 16 (Ch. 5) 5/1.
Lecture 17 (Ch. 5) 5/2.
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Lecture 18 (Ch. 5) 5/5.
Current scores and their histogram .
And here is the histogram of the test scores for those who attend lectures
regularly (in red), and those who do not (in black). Note the increase of
about 2 points (i.e. 10%) in the mean of those who attend.
Lecture 19 (Ch. 5-7) 5/7.
Lecture 20 (Ch. 7) 5/8.
Lecture 21 (Ch. 7) 5/9.
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Lecture 22 (Ch. 7) 5/12.
Lecture 23 (Review) 5/14.
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Here are some R Hints .
Homework Assignments (and Solutions):
HW1: 1.7(a,b), 1.8, 1.13, 1.16 (by hand, or by computer, e.g. hist() in R).
HW2: 1.19, 1.21, 1.26, 1.27, 1.28.
HW3: 1.23, 1.30(b,e), 1.31(d), 1.37 (warning some of the answers in book are wrong)..
HW4: 1.54, 1.57, 1.64(c,d; use Table), 1.73.
Graded problems (and points): 1.7(4), 1.8(8), 1.13 (8), 1.16 (2), 1.19 (8),
1.21 (6), 1.26 (4), 1.23 (6), 1.27 (4), 1.28 (2), 1.30 (4), 1.31 (2), 1.37 (4),
1.54 (6), 1.57 (6), 1.64 (4), 1.73 (4), total = 82.
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HW5: 2.6, 2.15, 2.16, 2.18 (by computer; see R hints.),
2.21 (by computer. Additionally, plot the boxplot for HC and CO as well).
HW6: 2.10, 2.13, 2.22, 2.28.
HW7: 2.46 (By computer. Do histogram too. In R, qqnorm(x) will generate qqplot),
2.61, 3.10 (a,b,c; hand or computer), hw4/10 (in lecture 7), 3.11 (By hand).
HW8: hw4/11 (lecture 8), 3.19 (Don't answer the question asked; just compute the eqn
of the OLS line, by hand), 3.47(a,b), 3.48.
Graded problems (and points): 2.6 (4), 2.10 (2), 2.13 (2), 2.15 (4), 2.16 (4),
2.18 (2), 2.21 (4), 2.22 (6), 2.28 (2), 2.46 (2), 2.61 (2), 3.10 (5),
3.11 (5), 3.19 (2), 3.47 (6), 3.48 (3), 4/10 (2), 4/11 (2), total = 59.
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HW9: 3.21 (c,d,e; use the printout as much as possible), 3.45, 3.47(c),
3.52 (By computer; report R-squared, and r, i.e. the correlation between x and y).
HW10: 3.29, 3.33 (use printout as much as possible), 3.44 (in d, compute R-squared),
3.49 (in b, compute R-squared). All of these may be done by hand or by computer.
HW11: 3.35, 3.36 (use printout as much as possible), 3.37 (by hand or by computer),
3.50.
Graded problems (and points): 3.21 (5), 3.45 (6), 3.47 (3), 3.52 (2), 3.29 (5),
3.33 (4), 3.44 (8), 3.49 (6), 3.35 (4), 3.50 (6), 3.36 (8), 3.37 (8), total = 65.
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HW12: 3.41(a-d), 3.42 (a,b), hw4/21 (in lecture 12).
HW13: 4.24, 4.25, 4.26, 4.31.
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HW14: hw4/28_1, hw4/28_2, hw4/28_3 (in lecture 15), 4.12 (in part b, can you
justify using pi=1/2?).
HW15: hw5/1 (in lecture 16), 5.2, 5.6, 5.7 (as in lecture 16).
HW16: hw5/2 (in lecture 17), 5.8 (a,b), 5.10, 5.15 (typo in answer), 5.72, 5.73.
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HW17: 5.20, 5.24, 5.62 (Hint: define events A1 and A2, corresponding to the
prob of pump1 and pump2 to fail, respectively. Then solve two equations for
p(A1 AND A2).), 5.46, hw5/5 (in Lecture 18).
HW18: 5.47, 5.48, 5.50, 5.54 (in part c, use CLT), 5.70 (a,b).
HW19: 7.14, 7.22 (use the big/messy formula), 7.28, 7.86 (in part a, use the
simple formula), 7.87 (ignore 1st sentence; compute CI for (mu + zp sigma), where
zp is what appears in the fomula given in the problem as "z percentile").
HW20: hw5/9 (in lecture 21), 7.25, 7.26 (replace "lower" with "2-sided"), 7.34,
7.75.
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HW21: 7.35a, 7.36a, 7.45(a,b), 7.83 ( Do only the following: a) Make a qqplot of
the data provided to decide if a t-interval for the population mean is appropriate.
b) Regardless of the outcome of part a, compute the 95% CI for the population
mean, using the formulas developed in class/book. By hand or by computer.)
HW22: TBA.
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